To remove Adaptive Server, run the installer.
Prerequisites
Shut down all servers.
Task
Note: The uninstallation process reverses only those actions originally performed by
                the installer, leaving intact any files or registry entries you created after the
                installation. Remove these after you complete the uninstallation.
- Execute: $SYBASE/sybuninstall/ASESuite/uninstall 
 
- Click Next in the Uninstall Welcome window.
- Choose one of the following, then click Next:- Complete Uninstall – uninstalls
                        everything originally installed by the installer.
- Uninstall Specific Features –
                        displays a list of features. If any unselected products/components are
                        dependent on features selected for uninstallation, you can still proceed
                        with the uninstallation but dependent features are not uninstalled.
  You see a window indicating that the uninstallation
process is being performed. There is no progress bar. Note: 
                        You may need to confirm the deletion of some files that have been modified since installation. 
                     
- When you see the final window, click Done to exit the uninstallation program.